List of usage examples for org.eclipse.swt.widgets Tree getItem
public TreeItem getItem(Point point)
From source file:org.eclipse.swt.snippets.Snippet90.java
public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setText("Snippet 90"); final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI); for (int i = 0; i < 12; i++) { TreeItem treeItem = new TreeItem(tree, SWT.NONE); treeItem.setText("Item " + i); }//from w w w .java2s .c o m tree.addListener(SWT.MouseDown, event -> { Point point = new Point(event.x, event.y); TreeItem item = tree.getItem(point); if (item != null) { System.out.println("Mouse down: " + item); } }); Rectangle clientArea = shell.getClientArea(); tree.setBounds(clientArea.x, clientArea.y, 200, 200); shell.setSize(300, 300); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:TreeItemMousePostion.java
public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI); for (int i = 0; i < 12; i++) { TreeItem treeItem = new TreeItem(tree, SWT.NONE); treeItem.setText("Item " + i); }//from w w w.j a v a2s. c o m tree.addListener(SWT.MouseDown, new Listener() { public void handleEvent(Event event) { Point point = new Point(event.x, event.y); TreeItem item = tree.getItem(point); if (item != null) { System.out.println("Mouse down: " + item); } } }); tree.setSize(200, 200); shell.setSize(300, 300); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:org.eclipse.swt.snippets.Snippet226.java
public static void main(String[] args) { final Display display = new Display(); Shell shell = new Shell(display); shell.setText("Custom gradient selection for Tree"); shell.setLayout(new FillLayout()); final Tree tree = new Tree(shell, SWT.MULTI | SWT.FULL_SELECTION); tree.setHeaderVisible(true);//from w w w . ja va2s .c o m tree.setLinesVisible(true); int columnCount = 4; for (int i = 0; i < columnCount; i++) { TreeColumn column = new TreeColumn(tree, SWT.NONE); column.setText("Column " + i); } int itemCount = 3; for (int i = 0; i < itemCount; i++) { TreeItem item1 = new TreeItem(tree, SWT.NONE); item1.setText("item " + i); for (int c = 1; c < columnCount; c++) { item1.setText(c, "item [" + i + "-" + c + "]"); } for (int j = 0; j < itemCount; j++) { TreeItem item2 = new TreeItem(item1, SWT.NONE); item2.setText("item [" + i + " " + j + "]"); for (int c = 1; c < columnCount; c++) { item2.setText(c, "item [" + i + " " + j + "-" + c + "]"); } for (int k = 0; k < itemCount; k++) { TreeItem item3 = new TreeItem(item2, SWT.NONE); item3.setText("item [" + i + " " + j + " " + k + "]"); for (int c = 1; c < columnCount; c++) { item3.setText(c, "item [" + i + " " + j + " " + k + "-" + c + "]"); } } } } /* * NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly. * Therefore, it is critical for performance that these methods be * as efficient as possible. */ tree.addListener(SWT.EraseItem, event -> { event.detail &= ~SWT.HOT; if ((event.detail & SWT.SELECTED) != 0) { GC gc = event.gc; Rectangle area = tree.getClientArea(); /* * If you wish to paint the selection beyond the end of * last column, you must change the clipping region. */ int columnCount1 = tree.getColumnCount(); if (event.index == columnCount1 - 1 || columnCount1 == 0) { int width = area.x + area.width - event.x; if (width > 0) { Region region = new Region(); gc.getClipping(region); region.add(event.x, event.y, width, event.height); gc.setClipping(region); region.dispose(); } } gc.setAdvanced(true); if (gc.getAdvanced()) gc.setAlpha(127); Rectangle rect = event.getBounds(); Color foreground = gc.getForeground(); Color background = gc.getBackground(); gc.setForeground(display.getSystemColor(SWT.COLOR_RED)); gc.setBackground(display.getSystemColor(SWT.COLOR_LIST_BACKGROUND)); gc.fillGradientRectangle(0, rect.y, 500, rect.height, false); // restore colors for subsequent drawing gc.setForeground(foreground); gc.setBackground(background); event.detail &= ~SWT.SELECTED; } }); for (int i = 0; i < columnCount; i++) { tree.getColumn(i).pack(); } tree.setSelection(tree.getItem(0)); shell.setSize(500, 200); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:TreeTableGradient.java
public static void main(String[] args) { final Display display = new Display(); Shell shell = new Shell(display); shell.setText("Custom gradient selection for Tree"); shell.setLayout(new FillLayout()); final Tree tree = new Tree(shell, SWT.MULTI | SWT.FULL_SELECTION); tree.setHeaderVisible(true);// w w w . j a va 2 s.c o m tree.setLinesVisible(true); int columnCount = 4; for (int i = 0; i < columnCount; i++) { TreeColumn column = new TreeColumn(tree, SWT.NONE); column.setText("Column " + i); } int itemCount = 3; for (int i = 0; i < itemCount; i++) { TreeItem item1 = new TreeItem(tree, SWT.NONE); item1.setText("item " + i); for (int c = 1; c < columnCount; c++) { item1.setText(c, "item [" + i + "-" + c + "]"); } for (int j = 0; j < itemCount; j++) { TreeItem item2 = new TreeItem(item1, SWT.NONE); item2.setText("item [" + i + " " + j + "]"); for (int c = 1; c < columnCount; c++) { item2.setText(c, "item [" + i + " " + j + "-" + c + "]"); } for (int k = 0; k < itemCount; k++) { TreeItem item3 = new TreeItem(item2, SWT.NONE); item3.setText("item [" + i + " " + j + " " + k + "]"); for (int c = 1; c < columnCount; c++) { item3.setText(c, "item [" + i + " " + j + " " + k + "-" + c + "]"); } } } } /* * NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly. * Therefore, it is critical for performance that these methods be as * efficient as possible. */ tree.addListener(SWT.EraseItem, new Listener() { public void handleEvent(Event event) { if ((event.detail & SWT.SELECTED) != 0) { GC gc = event.gc; Rectangle area = tree.getClientArea(); /* * If you wish to paint the selection beyond the end of last column, * you must change the clipping region. */ int columnCount = tree.getColumnCount(); if (event.index == columnCount - 1 || columnCount == 0) { int width = area.x + area.width - event.x; if (width > 0) { Region region = new Region(); gc.getClipping(region); region.add(event.x, event.y, width, event.height); gc.setClipping(region); region.dispose(); } } gc.setAdvanced(true); if (gc.getAdvanced()) gc.setAlpha(127); Rectangle rect = event.getBounds(); Color foreground = gc.getForeground(); Color background = gc.getBackground(); gc.setForeground(display.getSystemColor(SWT.COLOR_RED)); gc.setBackground(display.getSystemColor(SWT.COLOR_LIST_BACKGROUND)); gc.fillGradientRectangle(0, rect.y, 500, rect.height, false); // restore colors for subsequent drawing gc.setForeground(foreground); gc.setBackground(background); event.detail &= ~SWT.SELECTED; } } }); for (int i = 0; i < columnCount; i++) { tree.getColumn(i).pack(); } tree.setSelection(tree.getItem(0)); shell.setSize(500, 200); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:org.eclipse.swt.snippets.Snippet360.java
public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setText("Snippet 360"); shell.setLayout(new GridLayout()); // create a a tree with 3 columns and fill with data final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION); tree.setLayoutData(new GridData(GridData.FILL_BOTH)); tree.setHeaderVisible(true);/*from w w w .j a v a 2s . c om*/ TreeColumn column1 = new TreeColumn(tree, SWT.NONE); TreeColumn column2 = new TreeColumn(tree, SWT.NONE); TreeColumn column3 = new TreeColumn(tree, SWT.NONE); for (int i = 0; i < 9; i++) { TreeItem item = new TreeItem(tree, SWT.NONE); item.setText(new String[] { "root " + i + " 0", "root " + i + " 1", "root " + i + " 2" }); for (int j = 0; j < 9; j++) { TreeItem item2 = new TreeItem(item, SWT.NONE); item2.setText(new String[] { "child " + j + " 0", "child " + j + " 1", "child " + j + " 2" }); TreeItem current = item2; for (int k = 0; k < 5; k++) { TreeItem item3 = new TreeItem(current, SWT.NONE); item3.setText(new String[] { "descendent " + k + " 0", "descendent " + k + " 1", "descendent " + k + " 2" }); current = item3; } } } column1.setWidth(200); column2.setWidth(100); column3.setWidth(100); // create a TreeCursor to navigate around the tree final TreeCursor cursor = new TreeCursor(tree, SWT.NONE); // create an editor to edit the cell when the user hits "ENTER" // while over a cell in the tree final ControlEditor editor = new ControlEditor(cursor); editor.grabHorizontal = true; editor.grabVertical = true; cursor.addSelectionListener(new SelectionAdapter() { // when the TreeEditor is over a cell, select the corresponding row // in the tree @Override public void widgetSelected(SelectionEvent e) { tree.setSelection(new TreeItem[] { cursor.getRow() }); } // when the user hits "ENTER" in the TreeCursor, pop up a text // editor so that they can change the text of the cell @Override public void widgetDefaultSelected(SelectionEvent e) { final Text text = new Text(cursor, SWT.NONE); TreeItem row = cursor.getRow(); int column = cursor.getColumn(); text.setText(row.getText(column)); text.addKeyListener(keyPressedAdapter(event -> { // close the text editor and copy the data over // when the user hits "ENTER" if (event.character == SWT.CR) { TreeItem localRow = cursor.getRow(); int localColumn = cursor.getColumn(); localRow.setText(localColumn, text.getText()); text.dispose(); } // close the text editor when the user hits "ESC" if (event.character == SWT.ESC) { text.dispose(); } })); editor.setEditor(text); text.setFocus(); } }); // Hide the TreeCursor when the user hits the "MOD1" or "MOD2" key. // This allows the user to select multiple items in the tree. cursor.addKeyListener(keyPressedAdapter(e -> { if (e.keyCode == SWT.MOD1 || e.keyCode == SWT.MOD2 || (e.stateMask & SWT.MOD1) != 0 || (e.stateMask & SWT.MOD2) != 0) { cursor.setVisible(false); } })); // Show the TreeCursor when the user releases the "MOD2" or "MOD1" key. // This signals the end of the multiple selection task. tree.addKeyListener(new KeyListener() { @Override public void keyReleased(KeyEvent e) { if (e.keyCode == SWT.MOD1 && (e.stateMask & SWT.MOD2) != 0) return; if (e.keyCode == SWT.MOD2 && (e.stateMask & SWT.MOD1) != 0) return; if (e.keyCode != SWT.MOD1 && (e.stateMask & SWT.MOD1) != 0) return; if (e.keyCode != SWT.MOD2 && (e.stateMask & SWT.MOD2) != 0) return; TreeItem[] selection = tree.getSelection(); TreeItem row = (selection.length == 0) ? tree.getItem(tree.indexOf(tree.getTopItem())) : selection[0]; tree.showItem(row); cursor.setSelection(row, cursor.getColumn()); cursor.setVisible(true); cursor.setFocus(); } @Override public void keyPressed(KeyEvent e) { switch (e.keyCode) { case SWT.ARROW_LEFT: case SWT.ARROW_RIGHT: { if ((e.stateMask & SWT.MOD1) != 0) { TreeItem[] selection = tree.getSelection(); if (selection.length > 0) { selection[0].setExpanded(e.keyCode == SWT.ARROW_RIGHT); } break; } } } } }); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:org.eclipse.swt.snippets.Snippet221.java
static void Scroll(Tree tree, int x, int y) { TreeItem item = tree.getItem(new Point(x, y)); if (item == null) return;/*from ww w. jav a 2 s. c o m*/ Rectangle area = tree.getClientArea(); int headerHeight = tree.getHeaderHeight(); int itemHeight = tree.getItemHeight(); TreeItem nextItem = null; if (y < area.y + headerHeight + 2 * itemHeight) { nextItem = PreviousItem(tree, item); } if (y > area.y + area.height - 2 * itemHeight) { nextItem = NextItem(tree, item); } if (nextItem != null) tree.showItem(nextItem); }
From source file:org.eclipse.swt.snippets.Snippet221.java
static TreeItem PreviousItem(Tree tree, TreeItem item) { if (item == null) return null; TreeItem childItem = item;//w w w .ja va 2 s . c om TreeItem parentItem = childItem.getParentItem(); int index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem); if (index == 0) { return parentItem; } else { TreeItem nextItem = parentItem == null ? tree.getItem(index - 1) : parentItem.getItem(index - 1); int count = nextItem.getItemCount(); while (count > 0 && nextItem.getExpanded()) { nextItem = nextItem.getItem(count - 1); count = nextItem.getItemCount(); } return nextItem; } }
From source file:org.eclipse.swt.snippets.Snippet254.java
static TreeItem nextItem(Tree tree, TreeItem item) { if (item == null) return null; if (item.getExpanded() && item.getItemCount() > 0) return item.getItem(0); TreeItem childItem = item;//from w w w . j a va 2 s . c o m TreeItem parentItem = childItem.getParentItem(); int index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem); int count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount(); while (true) { if (index + 1 < count) return parentItem == null ? tree.getItem(index + 1) : parentItem.getItem(index + 1); if (parentItem == null) return null; childItem = parentItem; parentItem = childItem.getParentItem(); index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem); count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount(); } }
From source file:org.eclipse.swt.snippets.Snippet221.java
static TreeItem NextItem(Tree tree, TreeItem item) { if (item == null) return null; if (item.getExpanded()) { return item.getItem(0); } else {//w ww .ja v a 2s. c o m TreeItem childItem = item; TreeItem parentItem = childItem.getParentItem(); int index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem); int count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount(); while (true) { if (index + 1 < count) { return parentItem == null ? tree.getItem(index + 1) : parentItem.getItem(index + 1); } else { if (parentItem == null) { return null; } else { childItem = parentItem; parentItem = childItem.getParentItem(); index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem); count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount(); } } } } }
From source file:org.eclipse.swt.examples.controlexample.TreeTab.java
@Override protected void specialPopupMenuItems(Menu menu, Event event) { MenuItem item = new MenuItem(menu, SWT.PUSH); item.setText("getItem(Point) on mouse coordinates"); final Tree t = (Tree) event.widget; menuMouseCoords = t.toControl(new Point(event.x, event.y)); item.addSelectionListener(widgetSelectedAdapter(e -> { eventConsole.append("getItem(Point(" + menuMouseCoords + ")) returned: " + t.getItem(menuMouseCoords)); eventConsole.append("\n"); }));/*www . j a va 2 s .com*/ }